Tool for inserting and withdrawing screwed ferrules.



E. 0. 1 J. JENKINS.

TOOL FOR INSERTING AND WITHDRAWING SCREWED PERRU LES.

APPLIOATION FILED DBO. 15, 1911.

1,030,732, Patented June 25, 1912.

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E. G. & J. JENKINS. TOOL FOR INSERTING AND WITHDRAWING SCREWED FERRULBS.APPLICATION FILED DEC. 15, 1911.

1,030,732. Patented June 25,1912.

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iq- 19 a \c EDWARD COTTRELL JENKINS AND JOSEPH JENKINS, OF BIRKENHEAD,ENGLAND.-

TOOL FOR INSERTING AND WITHDRAWING SCREWED FERRULES.

Specification of Letters Patent.

Application filed December 15, 1911.

To all whom it may concern:

Be it known that we, EDWARD COTTRELL J ENKINS and JOSEPH JENKINS,subjects of the King of Great Britain and Ireland, residing atBirkenhead, in the county of Chester, England, have inventedImprovements in Tools for Inserting and WVithdrawing Screwed Ferrules,of which the following is a specification.

This invention relates'to tools of the kind described in thespecification of prior Letters Patent granted to us, No. 1,009,248, forextracting screw threaded ferrules from tube plates. Such apparatuscomprises a shank having at one end a removable turnscrew piece, and arotary socket encircling the said end of the shank. As heretoforeconstructed and as shown in said patent the tool is suitable forextracting ferrules that project a predetermined distance beyond thetube plate, but if a ferrule projects to a less ex tent, the turnscrewpiece cannot be pressed down to the full depth of the groove formed inthe end of the ferrule. Now it is very important when extractingferrules, espe cially ferrules that have become corroded in the tubeplate, that the turn screw piece should extend right down to the bottomof the ferrule groove, and the improved tool according to this inventionis so constructed that this can be done. The shank of the improved toolis capable of adjustment in an endwise direction so that, no matter howfar or how little the ferrules extend above the tube plate the rotarysocket can be screwed down onto the projecting end of the ferrule untilits end comes into contact with the face of the tube plate. Vhen this isdone the shank with its turnscrew piece is forced into contact with theferrule and firmly held in position until the ferrule is extracted. Bythe same means of adjustment ferrules can be inserted in the tube plateto any predetermined depth according to requirements.

Referring to the accompanying illustrative drawings Figure 1 is asectional elevation of the improved tool as adjusted for insertingferrules a predetermined desired depth into a tube plate. Fig. 2 is asimilar View taken at right angles to Fig. 1 but showing a ferruletightly gripped in the tool ready for being screwed into the tube plate.Figs. 3 and 4 are similar views to Fig. 1 but showing the parts of thetool in other positions as hereinafter referred to. Fig. 5

Patented June 25, 1912.

Serial No. 665,941.

is an inverted cross section corresponding to the line A B of Fig. 1;Fig. 6 is a View of the upper end of the tool with parts removed, andFig. 7 is a view of the lower end of the tool.

The turning spindle or shank C is squared at its outer end to receive aspanner or turn ing lever while its lower end is enlarged at D topractically the same diameter as the bottom of the thread of the ferruleE. To retain it in position the spindle C has a groove C formed in asshown. The turnscrew piece or steel cross bar F is removably held by apin G in the enlarged portion D. The lower end of the cross bar Fprojects beyond the end of the enlarged portion D and is shaped asclearly shown in Fig. 3 to form a guide for the outer edges to enter thegroove H in the ferrule E.

By means of the adjustable tubular spindle J which is bored out to slideon the spindle C the cross bar F can be pressed down tightly in theferrule groove H by the lower end of the said spindle pressing on theupper end of the enlarged portion I). The upper end of the tubularspindle J is enlarged to form a gripping flange K having a milled edgeand is provided with a set screw L that enters the groove C formed inthe spindle C. The exterior of the tubular spindle J is of the samediameter as and screwed to correspond with the ferrule the tool isintended to handle and is furnished with a back or look nut M.

The rotary socket nut N is screw threaded throughout its entire lengthto the same diameter and pitch as the ferrule and has an enlarged orflanged end P with milled edges whereby it can readily be rotated forscrewing it onto the ferrule as far as pos sible by hand. Below thisflange the rotary socket is of hexagonal cross section at Q to receive aspanner for tightly screwing it onto a ferrule until the end of thesteel cross bar rests on the bottom of the groove therein as shown inFig. 2.

When in the operation of screwing a ferrule into a tube plate, the locknut M is screwed tightly onto the end of the rotary socket the tubularspindle J is prevented from moving backwardly so that the upper end ofthe ferrule can only enter the socket the predetermined distance andwhen the spindle G is turned for inserting the ferrule in the tube platethe distance to which the ferrule can be inserted in the tube plate willbe limited by the end of the rotary socket coming into contact with thetube plate. The ferrule is then released by unscrewing the rotary sockettherefrom.

When the improved tool is employed for extracting ferrules whoseprojecting ends vary in length, the locking nut M is screwed back to itsfull extent see Fig. 4, and locked against the flange K. The rotarysocket N, which is formed with grooves N for clearing the threads of acorroded ferrule, is then screwed down onto the ferrule until stopped bythe face of the tube plate see Fig. 3; the tubular spindle J is thenturned to force the steel cross bar F hard down into the groove H in theferrule, see Fig. 4:, the lock nut M remaining screwed back home asshown. The shank or screw spindle C is then turned to withdraw theferrule. It will thus be understood that the whole of the projecting endof the ferrule is encircled by the rotary socket Fig. 3, after which thespindle and steel cross bar are forced down by the tubular spindle J,Fig. 4:, and cannot be forced back while being extracted. The recess inthe shank spindle in which the set screw L engages is made wide enoughto allow sufficient end play of the spindle to allow of the cross bar Fbeing placed in the groove H of ferrule before being finally presseddown.

What we claim is 1. A tool for inserting and withdrawing screwedferrules, comprising a shank, a cross bar mounted in one end of saidshank and adapted to engage a screw driver notch formed in the end of aferrule, an externally screwed spindle mounted to rotate on said shank,and an internally screw threaded socket arranged to screw on saidscrewed spindle and adapted to embrace the cross bar.

2. A tool for inserting and withdrawing screwed ferrules, comprising ashank, a cross bar mounted in one end of said shank and adapted toengage a screw driver notch formed in the end of a ferrule, anexternally screwed spindle mounted to rotate and spindle and adapted toembrace the cross bar and a lock nut on said screwed spindle.

4:. A tool for inserting and withdrawing screwed ferrules, comprising ashank, a cross bar mounted in one end of said shank and adapted toengage a screw driver notch formed in the end of a ferrule, anexternally screwed spindle mounted to rotate on said shank, a milledhead on said spindle, means for llmiting endwise movement of saidspindle relatively to saidshank, and an in-.

ternally screw threaded socket arranged to screw on said screwedspindleand adapted to embrace the cross bar.

5. A tool for inserting and withdrawing screwed ferrules, comprising ashank, a

cross bar mounted in one end of said shank and adapted to engagea screwdriver notch formed in the end of the ferrule, an externally screwedspindle mounted to rotate on said shank, a milled head on said spindle,

means for limiting endwise movement of said spindle relatively to saidshank, an internally screw threaded socket arranged to screw on saidscrewed spindle and adapted to embrace the cross bar, a milled head on Vsaid socket and a lock nut on said spindle adapted to bear on saidsocket. V

Signed at 22 'Water street, Liverpool, England, this first day ofDecember 1911.

EDWARD COTTRELL JENKlNS. JOSEPH JENKINS. WVitnesses:

F. M. C. Soo'r'r, H. WATSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, I). G.

